Calculator.



A. G. MEIER.

CALCULATOR.

APPLICATION FILED APR. 16, 1906.

Patented Mar. 9, 1909.

4 SHEETS-SHEET 1.

IIVVENTOI? A. G. Meier.

' WITNESSES:

av Q on mm am 3 pm A. G. MEIER.

CALCULATOR.

APPLICATION FILED APR. 16, 1906.-

Patented Mar. 9, 1909.

4 SHEETS-SHEET z.

INVENTOR A. G. Meier.

WITNESSES:

ATTORNEY A. G. MEIER.

GALGULATOR.

APPLICATION FILED APR. 16, 1906.

Patented M341. 9, 1909.

4 sums-sum a.

D WITNESSES: Q

INVENTOR A. G. Meier.

A TTOR/VEY A. G. MEIER.

CALCULATOR. nrmoumn FILED 11212.16, 100a.

Patented Mar; 9, 1909.

4BHEETB-SHEET 4. 1

1 lNVE/VTUR A.G.Meier. 111 9 LLM.

. Toallwhom'it adding machine- 10,

and also with a supp ADOLPHUS G.1MZEIER, or an Louis, ins-scum, assreaoa T0 conranif, a connotation of msso'onr.

nnPLE'x manic Lineman cammron.

Specification of Ldtte'n Patent. v 5 1am mtu mm, 100:. mu nausea.

Patented March 9,1909;

may concern:

7 Be it known that I, Ano'L'Pnos G. MEIER, a citizen of the United States, residin at the city of St. Louis, in the 'State'of ouri, have invented a certain new anduseful Cal- .culator, of which the following is such a full, clear, and exact description as will enable any one skilled in the art to which it apper-- tains to make and use the same, reference being had to the accom anying drawings, forming art of this spec' cation- The 0 ject of my lnventi'on is to provide an adding or other calculating machine with a superimposed or supplementary keyboard, ementary accumulator,

so that the machine ma be used for multiplication and similar cf culations'.

My device is preferably made in the ,form of anattachment, as shownin the drawings,- which can be applied to a'machine of standard type". The main supplementary devices may however, be formed in an integral machine desired. I

In the accompanying drawings, which illustrate one form of attachment made in accordance with m invention, together with a portion of an ad machine to-which the same is applied, P" re 1 is ayertical longitudinal section of. t e attachment and a side elevation of a portion ofthe adding machine; Fig. 2 is a front elevation; Fig. 3'. is a sectional view of aportion of the attachment; Fig. 4 is a top plan view on a slightly reduced scale, a portion of the main frame or casing broken away, and Fi 5 is a view showing the main adding mec' anisms;

Like marks of reference refer to similar parts inthe severalviews of the drawings.

10 represents an adding machine or other suitable calculating machine. I In the drawings I have shown the type of machine known as the Bin'roughs adding machine, or. American arithm'ometer, but my at-' moment may be used in connection with other types of adding and calcdlattingmw chines. v

11' represents the numeral keys 12 the error key and 13 the o crating handle of al? of' these parts being of the usual construction 1 y r 14 is the main frfiie or housingofrayilt tachment. frame-or housing 14 1s arranged to fit on the top of the adding machine 10, as clearly shown in 1. Journaled in theme: and upper part 0 the frame or bone top plate 21 and a bottom plate 22'.

, ing 14 is a shaft 15 on which is mounted the supplementary accumulator mechanism, as

wi he hereinafter more fuliy described.- Infrontof the'shaft 15 is a rock shaft 16 carried at one end in the frame or housing 14 and at 0 the other in an extension 17 of said frame onv housing 14; The rock shaft 16 is thus made of suficient length to allow of the necessary movement of t e sulpplementary keyboard. The sup Iementa 'eyboard is mounted in a latera y movab e frame 18, which is slidingl' mounted at one .end on the said rock sha 1'6, and at the other isprovided with a downward extension 19 running u on the front late 20 of the main frame or ousing 14. a e sliding frame 18 is provided with a Through theseplates 21 and 22 pass the stems of t e keys 23 of thesu erimposed or suppl'e'r'hehmy keyboard, he plate 21 is provided on its under face withchannel bars 24. Passing thro'u each of the channel bars 24 is a 25. urrou'nding each of the key stems 23 between the pin 25 and the lower end 22' is a coil spring 26, which normall holds the key 23 in its raised position. hen one of the k'e s 23 is depressed so as to bring the in 25 be ow the channel bar 24, the key can e rotated through one=quarter of a turn so as to lock the ke in its depressed I shown in 1. t The lateral y movable frame 18- is provided with a handle 28 b I means of WhlCh its movement is controlle This handle-28 is provided with a detent 29 adapted. to enter holes 30' the front late 20' I hereinbefore referred to. The main ame I4 is alsoprovided with a lateral projection 31 carrying a set screw 32 adaptedtobear u on the topof theerror key 12, so as to'release the numeral keys 1 1 of the adding machine, I

as will be hereinafter described. The rock shaft 16 is provided with a'key-way 35 extending through a considerable portion ofits length. Mounted upon the sald rock shaft 161san ope ton ue 37 exten mg into t es'ald key-way 35-, so that the said arm 36 moves w th the rock shaft 16 as the said shaft is oscillated.

The said arm 36 is, however, capabie of 1'rnzrve'anlent,longitudinally of the shaft with theframe 18. In order to' move the arm136' the frame 18, the said frame is provided with" a bracket 38, as shown in Figs. 2 and 4. The arm 36 is provided with a finger 39* normally held in position against a stop 40' by osition, as. 85

rat lever 36' rovided With'a 100 means of as ring 41. In order to operate the shaft 16 t e shaft is extended beyond the right hand side of the main frame 14 and has rigidly secured-to it an arm 42. This arm 42 is connected to the operating handle 13 of the adding machine by means of a link 43.

Loosely mounted upon the shaft 15 hereinbefore described, are the accumulator wheels teeth and adjacent to each of the ratchet wheels 48 is a lever 49 provided with anopof the rate et wheel 48.

crating do 50, which enga es with the teeth The forward end 51 of each of the levers 49 is adapted to be actuated by the fin er 39 on the arm 36. v

n 52 is a rod whic acts as a stop for the various levers 49 and the levers are normally held imposition against this stop 52 'by means of col springs 53 attached at one end to the said levers 49, and at the other to a rod 54.

55 are retaining pawls whic engage with the ratchet wheels 48. The r taimn pawls 55 are pivoted on a rod 56 and are Imld in normal position by means of coil springs 57.

In order to return the accumulator wheels to their initial position I secureTto the shaft 15 at the left hand side of each of said wheels an arm 58 and I provide each of the said wheels with a pin 59 adapted to be engaged by the arm 58. The arms 58 are operated by means of a milled head 60 upon the end of the shaft 15.

The main adding mechanism contained in p 10 being of usual construction e describedin detail. Itis prothe casin need not vided with sto s 61 which are set up by the operation of t e ke s 11. Upon the operatlon of the handle t ese stops determine the number placed in the main addin or accumulator wheels 62 and in the printmg wheels 63'. When the sum is takenby de ressing chine will be free.

the total key the same is transferred om the accumulator wheels 62 to the printing wheels 63 by means of levers 64.

The operation of my device is as follows:

If, for example, it is desired to multiply- 69,428 by 374, the number 69,428 is set u on the supplementary. or en erimposed e g board, as shown in Fig. 4, y depressing't e proper keys 23, and turning each keydepressed through one-quarter of a revolution, so as to lock the key in its depressed osition. It is, of course, necessa to force dhw'n the error key 12 by means 0 the set screw32, so

that all the numeralkeys 11 of the main madin machine is o erated. At each 0 eration 0 thehandle t rockshaft 16 W1 1 be.

After the number is set 1:8, as above described, the handle 13 of the operated so as to bring the finger 39 into engagement with the end 51 of the lever 49 of the right hand accumulator wheel, and, conse uently, the right hand accumulator wheel Wi 1 show the number of times which the han- -dle has been operated with the keyboard in the first position. In this instance after the handle is operated four times and the right hand accumulator wheel shows four through its opening, as illustrated in Fig. 4 of the drawings; the handle 28 isgrasped and the detent 29.released so that the su plementary keyboard can be swung upward on the rock shaft 16 and moved one space to the left, when it is swung down and again secured in position by' means of the detent;29. The

andle'is now operated seven times and the keyboard again moved one space to the left and the handle operated three times, the numbers 3 and 7 appearing through the op vnings 46 to indicate to the o erator when t e handle has been operate 'the proper number of times. By now taking the total on the-adding machine the required result is obtained. In order to return the accumulator wheels to zero, the milled head 60 is grasped and the shaft 15 rotated until the arms 58 enga e the pins 59 on all the wheels 45 and the w eels can then be brought to zero.

While I have shown and described my supriven directly from a manually operate handle, I do not wish my invention limited to Elemental accumulating device as v bein evident that in place of the direct connection I the supplemental accumulator may be driven fromany intermediate part which is in turn driven from the operatlve handle." I

' Having fully described my invention, what I claim as new and desire to secure by Letters Patent of the United States, is

1. In a calculator, the combination with an addin machine or the like provided with a main eyboard and accumulator, of an n o crating handle for said-machine, a supplbmentary keybgard and a supplementary accumulator'for said. keybqard, said supplementary accumulator being actuated from the o crating handle of said adding machine;

2. v a calculator, the combination with an ad machine or the like provided with a main eyboard and accumulator, of an operating handle for said machine, a laterally movable supplementa keyboard, and a supplementary accum ator for said keyboard',-said su plementary accumulator beactuated om the operating. handle of sa d adding machine.

3. In a calculator, thecombination with an adding machine or the like provided with a main keyboard and accumulator, of an operating handle for said machine, a laterally movable su plementary keyboard, a lurality of accumu ating devices adapte to be brought successlvely into operation by the movement of said keyboard, and means for actuating said accumulating devices from the o crating handle of said adding machine.

4. n a calculator, the combinationwith an adding machine or the like provided with a main eyboard and accumulator, of an operating handle for said machine, a laterally movable supplementary keyboard, a plurality of supplementary accumulating devices, actuatin mechanism movable. with said keyboard and adapted to engage saidaccumulating devices, and o crating connections between said actuating evice-and the operating handle of said addmg machine.

5. In a calculator, the combination with an adding machine or the like provided with a main keyboard and accumulator, of an operating handle for said machine, a laterally movable supplementary keyboard, a plurality of supplementary accumulating wheels, ac-

tuating mechanism for said wheels movable I with said keyboard, and olperat' tions between said accumu atingw eels'and the o crating handle of said adding machine.

. 6. 'lhe combination with an adding ma chine and its actuator ;of a computin attachment comprising a depressible and aterally'so counter driven by the adding machine actua- -35 tor to. show the numbers of such repetitions under the different adjustments of the key board. Q

In testimony whereof, I have hereunto set my hand and afiixed my seal in the presence 40 of the two subscribing witnesses.

ADOLPHI JS G,

Witnesses:

BENNETTE PIKE, JAMES H. BRYsoN.

connec-' 25 MEIER. [L. 5.1 a 

